I generally agree with what saint steve has said although I have new cars just because I can, but isn't kev saying that new cars bought last year are worth more now than when they were new? As snoopy says, he's already had an offer for more than he paid, although he is keeping 
They are, and this 'plucked out of thin air £3k' amount, is offset from when I bought the car, its been through 1 VAT increase already, the customary VW rise in price and now another VAT increase in Jan, not to mention the amount actually paid for the car after dealer discounts.
When I drive it off the forecourt it looses £3k ? When I sit my arse in it tomorrow going to work, my car will be worth more now than when I bought it. Fact.
Kev, If you went to your dealer tommorow, they will offer you trade value, ie what you will get in return for your money, not their forecourt retail price.
You will loose nearly 3k. (Trade value is what im talking about!), not what you may try and get via a private purchaser.Which that is in the hands of what they are "prepared" to give you and not its true worth.